I recently heard about this company planning to sell a magnetically levitating bluetooth speaker. I understand that the levitation is partly motivated by visual aesthetics, but on the website the company makes this claim:
How does [speaker name] produce such awe inspiring sound? What makes [speaker name] different from any other bluetooth speaker? The answer is levitation. Instead of wasting amplication energy pushing sound waves into a desk, bookshelf, or table, all of the [speaker name]s amplication energy is directed to the speaker driver to create full, crisp, and clear sound. This enables [speaker name] to deliver audio performance far beyond its size. [speaker name] outputs a full 110 decibels with a 3 watt RMS amplifier. This also gives [speaker name] industry leading battery life without sacrificing audio performance: up to 15 hours of continuous playback at 70% volume.
My first thought was that surely some vibrations must be transmitted via the magnetic coupling between the speaker and the base unit. Maybe the speaker is not held very stiffly in its position by the magnetic field, but this "damping" could have been achieved by mechanical vibration isolators as well.
So, what I'm wondering is:
- How would the energy transfer through the magnetic coupling compare to energy losses from the normal physical contact between a speaker and its support?
- Does magnetical levitation like this really provide any conceptual benefit to the isolation of the speaker from its support? I.e. does actual "contact" make any fundamental difference to sound propagation?
This is not a question about this particular speaker, but rather about the physical principle that the company seem to claim to benefit from.